Bagheera kiplingi is a colorful, sexually dimorphic species. The male has amber legs, a dark cephalothorax that is greenish in the upper region near the front, and a slender reddish abdomen with green transversal lines. The female's amber front legs are sturdier than the other, slender legs, which are light yellow. It has a reddish-brown cephalothorax with the top region near the front black. The female's rather large abdomen is light brown with dark brown and greenish markings.

Only the male was described in 1896; the female was first described 100 years later by Wayne Maddison.[5]

B. kiplingi inhabit Mimosaceae trees, Vachellia in particular, where they consume specialized protein- and fat-rich nubs called Beltian bodies. The nubs form at the leaf tips of the acacia as part of a symbiotic relationship with certain species of ants. The spiders actively avoid the ants who attempt to guard the Beltian bodies (their food source) against intruders. Although the Beltian bodies account for over 90% of B. kiplingi diet, the spiders also consume nectar and occasionally steal ant larvae from passing worker ants for food. Sometimes they will cannibalize other B. kiplingi, especially during the dry season.

Despite their occasional acts of predation, the spiders' tissues have been found to exhibit isotopic signatures typical of herbivorous animals, implying that most of their food comes from plants.[3][6] The mechanism by which they process and ingest the Beltian bodies is still unresearched. The vast majority of spiders liquefy their prey using digestive enzymes before sucking it in.

While they feed almost exclusively on a herbivorous diet in Mexico where they inhabit more than half of Acacia collinsii trees, populations in Costa Rica, where less than 5% of Acacia are populated by B. kiplingi, do so to a lesser extent. Although this species is mostly territorial and forages solitarily, populations of several hundred specimens have been found on individual acacias in Mexico, with more than twice as many females as males. B. kiplingi appears to breed throughout the year. Observations of adult females guarding hatchlings and clutches suggest that the species is quasisocial.[4]